5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

limp mode???

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Old 11-13-2007, 05:50 PM
  #1  
p521us
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Default limp mode???

PROBLEM:yesterday i went to the track and on my 2nd run i had a good launch and 60' times. but shortly after that it lost RPM and when i got back on it it would rev up to 3g's and 'die' then it would drop to 1.5g's and only then would it let me rev it up to 3g's.

confusing i know but it was bacicly bouncing the RPM.

could the car have over-heated and gone into a 'limp mode' of sorts?


(P.S. my trap time was 67.4 @ 21mph)
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Old 11-13-2007, 06:00 PM
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Joel5.0
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Default RE: limp mode???

There's only one way to try to find out........ DIY KOEO/KOER/Cylinder Balance Self-Test
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Old 11-13-2007, 06:17 PM
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ahittz24
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Default RE: limp mode???

ORIGINAL: p521us

PROBLEM:yesterday i went to the track and on my 2nd run i had a good launch and 60' times. but shortly after that it lost RPM and when i got back on it it would rev up to 3g's and 'die' then it would drop to 1.5g's and only then would it let me rev it up to 3g's.

confusing i know but it was bacicly bouncing the RPM.

could the car have over-heated and gone into a 'limp mode' of sorts?


(P.S. my trap time was 67.4 @ 21mph)
Good Gracious I hope that was on foot!!!

I am kidding, you might want to check your coil, ign module, and your fuel pressure. Was the engine overheating when you ran it? If not then its not going to mysteriously going to over heat in a split second.
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Old 11-13-2007, 06:25 PM
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p521us
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Default RE: limp mode???

haha yea it got filmed and im gonna youtube it soon.

it was running a little hot beause my gf was hot sitting in staging.
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Old 11-13-2007, 06:29 PM
  #5  
ahittz24
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Default RE: limp mode???

ORIGINAL: p521us

haha yea it got filmed and im gonna youtube it soon.

it was running a little hot beause my gf was hot sitting in staging.
Let this be the first lesson in the whole... leave your gf at home moto. Now you can make her feel bad, tell her she messed your stang up.
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Old 11-16-2007, 04:06 PM
  #6  
p521us
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Default RE: limp mode???

brownie points for me!!! haha
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